Strategies for Enhanced Crop Resistance to Insect Pests

Douglas, Angela E.

doi:10.1146/annurev-arplant-042817-040248

Cited by 176 publications

(132 citation statements)

References 146 publications

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“…Moreover, most spiders are generalist predators, and are therefore adept at killing both pollinators and natural predators of pest insects, making them unsuitable for biocontrol. However, this does not discount the possibility that individual insecticidal toxins found in the venom of spiders might have application in the control of insect pests …”

Section: Spiders Are Professional Insect Killersmentioning

confidence: 94%

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Tying pest insects in knots: the deployment of spider‐venom‐derived knottins as bioinsecticides

King

2019

Pest Management Science

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Spider venoms are complex chemical arsenals that contain a rich variety of insecticidal toxins. However, the major toxin class in many spider venoms is disulfide‐rich peptides known as knottins. The knotted three‐dimensional fold of these mini‐proteins provides them with exceptional chemical and thermal stability as well as resistance to proteases. In contrast with other bioinsecticides, which are often slow‐acting, spider knottins are fast‐acting neurotoxins. In addition to being potently insecticidal, some knottins have exceptional taxonomic selectivity, being lethal to key agricultural pests but innocuous to vertebrates and beneficial insects such as bees. The intrinsic oral activity of these peptides, combined with the ability of aerosolized knottins to penetrate insect spiracles, has enabled them to be developed commercially as eco‐friendly bioinsecticides. Moreover, it has been demonstrated that spider‐knottin transgenes can be used to engineer faster‐acting entomopathogens and insect‐resistant crops. © 2019 Society of Chemical Industry

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Section: Spiders Are Professional Insect Killersmentioning

confidence: 94%

“…However, this does not discount the possibility that individual insecticidal toxins found in the venom of spiders might have application in the control of insect pests. 4,[9][10][11]…”

Section: Spiders Are Professional Insect Killersmentioning

confidence: 99%

Tying pest insects in knots: the deployment of spider‐venom‐derived knottins as bioinsecticides

King

2019

Pest Management Science

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“…During evolution, a certain balance between herbivores, their plant hosts and pathogens/parasites has been reached. Using RNAi as a gene manipulator, key herbivore genes involved in maintaining this homeostasis could be targeted . We define such RNAi as ‘RNAi plus ’.…”

Section: Synergy Of Rna With Plant Defense Chemicals and Micro‐organismsmentioning

confidence: 99%

“…Herbivores are often involved in an evolutionary arms race against the defense mechanisms of plants and infections by pathogens and parasites. [47][48][49] During evolution, a certain balance between herbivores, their plant hosts and pathogens/parasites has been reached. Using RNAi as a gene manipulator, key herbivore genes involved in maintaining this homeostasis could be targeted.…”

Section: Synergy Of Rnai With Plant Defense Chemicals and Micro-organmentioning

confidence: 99%

“…Using RNAi as a gene manipulator, key herbivore genes involved in maintaining this homeostasis could be targeted. 5,48 We define such RNAi as 'RNAi plus '. For instance, using RNAi plus , targeting of genes involved in plant toxin detoxification or pathogen immunity-related genes could enhance the tolerance of plants or increase the virulence of beneficial pathogens/parasites of the pests.…”

Section: Synergy Of Rnai With Plant Defense Chemicals and Micro-organmentioning

confidence: 99%

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Beyond insects: current status and achievements of RNA interference in mite pests and future perspectives

Niu

Shen

Christiaens

et al. 2018

Pest Management Science

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Mites comprise a group of key agricultural pests on a wide range of crops. They cause harm through feeding on the plant and transferring dangerous pathogens, and the rapid evolution of pesticide resistance in mites highlights the need for novel control methods. Currently, RNA interference (RNAi) shows great potential for insect pest control. Here, we review the literature regarding RNAi in mite pests. We discuss different target genes and RNAi efficiency in various mite species, a promising Varroa control program using RNAi, the synergy of RNAi with plant defense mechanisms and microorganisms, and current understanding of systemic movement of double-stranded RNA (dsRNA). On the basis of this evidence, we can conclude that there is clear potential for application of RNAi-based mite control, but further research on several aspects of RNAi in mites is needed, including: (i) the factors influencing RNAi efficiency, (ii) the mechanism of environmental RNAi and cross-kingdom dsRNA trafficking, (iii) the mechanism of possible systemic and parental RNAi, and (iv) non-target effects, specifically in predatory mites, which should be considered during RNAi target selection. © 2018 Society of Chemical Industry.

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Application of high‐surface‐area graphitized carbon black with primary secondary amine as an alternative quick, easy, cheap, effective, rugged, and safe cleanup material for pesticide multi‐residue analysis in spinach

Islam

Lee

et al. 2019

J of Separation Science

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A multi-residue method has been developed and validated to determine 46 pesticides in spinach using liquid chromatography tandem mass spectrometry. The method is based on modified quick, easy, cheap, effective, rugged, and safe sample preparation, where high-surface-area graphitized carbon black was used first as sorbent material in the dispersive solid-phase extraction. The method was compared with the quick, easy, cheap, effective, rugged, and safe method. The morphology, surface area, pore size, and pore volume of the sorbent was determined. The results obtained show that the sorbent consists of high surface area (233 m 2 /g) and large pore volume (1.5 cm 3 /g).The calibration curve correlation coefficient (R 2 ) of the method was at least 0.99. The average recoveries ranged from 74 to 116%, and limits of detection and quantification from 0.0001 to 0.002 mg/kg and from 0.0002 to 0.005 mg/kg, respectively. Using the method, the pesticides exhibited low matrix effect (< 20%), except for nicosulfuron (29.86%), methomyl (26.77%), and flufenoxuron (24.65%). The method showed better potential to remove pigments than the quick, easy, cheap, effective, rugged, and safe method. It is demonstrated that the proposed method could be useful alternative for sample preparation of spinach and other matrices in future.

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Strategies for Enhanced Crop Resistance to Insect Pests

Cited by 176 publications

References 146 publications

Tying pest insects in knots: the deployment of spider‐venom‐derived knottins as bioinsecticides

Tying pest insects in knots: the deployment of spider‐venom‐derived knottins as bioinsecticides

Beyond insects: current status and achievements of RNA interference in mite pests and future perspectives

Application of high‐surface‐area graphitized carbon black with primary secondary amine as an alternative quick, easy, cheap, effective, rugged, and safe cleanup material for pesticide multi‐residue analysis in spinach

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